US12464588B2ActiveUtilityA1
Forwarding method and system for data broadcast reduction based on name centricity and applied in vehicle named data networking
Est. expiryDec 30, 2041(~15.5 yrs left)· nominal 20-yr term from priority
H04W 52/0206H04L 67/12H04W 40/125H04W 4/46H04W 4/06H04W 76/16H04L 67/63H04B 17/318
47
PatentIndex Score
0
Cited by
5
References
6
Claims
Abstract
A forwarding method and system for data broadcast reduction in a Vehicle Named Data Networking (VNDN) is proposed. The method includes (a) setting name centrality (NameCent) count data with respect to an interest packet received by a node of the VNDN; (b) measuring, by a Received Signal Strength Indicator (RSSI), a power level of signal received from an access point (AP) or any other vehicle in wireless communication; (c) calculating a weight of the interest packet for a data forwarder in a current node or a previous node based on the name centrality (NameCent) count data and signal strength measured by the Received Signal Strength Indicator (RSSI); and (d) determining a potential forwarder of a data packet by comparison of variables of the weight calculated in step (c).
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A forwarding method for data broadcast reduction in a Vehicle Named Data Networking (VNDN), the method comprising:
(a) setting name centrality (NameCent) count data with respect to an interest packet received by a node of the VNDN; (b) measuring, by a Received Signal Strength Indicator (RSSI), a power level of signal received from an access point (AP) or any other vehicle in wireless communication; (c) calculating a weight of the interest packet for a data forwarder in a current node or a previous node based on the name centrality (NameCent) count data and signal strength measured by the Received Signal Strength Indicator (RSSI); and (d) determining a potential forwarder of a data packet by comparison of variables of the weight calculated in step (c), wherein, in step (c), each weight is calculated with logic of the following equation:
W
i
n
=
{
α
×
(
RSSI
F
i
n
RSSI
max
)
+
(
1
-
α
)
×
(
NameCent
F
i
n
NameCent
max
)
}
[
Equation
1
]
(where, W in denotes weight of requested prefix (n) of forwarder (i), RSSI Fin denotes value of received signal strength indicator, RSSI max denotes maximum value of received signal strength indicator, NameCent Fin denotes name centrality count value of requested prefix (n) of forwarder (i), NameCent max denotes maximum name centrality count value of requested prefix (n) of forwarder (i), and a denotes weight factor).
2 . The method of claim 1 , wherein, in step (a), by setting, as a variable, an interest of the same content data for which a specific node receives requests from other nodes, a value of counting interests is set as the name centrality (NameCent) count data.
3 . The method of claim 2 , wherein, in step (a), the set count value of the name centrality (NameCent) is smaller than the number of other nodes adjacent to the specific node.
4 . The method of claim 1 , wherein step (d) comprises:
constructing a centrality table (CT), wherein a prefix of each node, a weight value (P nw ) of the previous node calculated in step (c), a weight value (C nw ) of the current node, and a name centrality count value (N CC ) calculated in step (a) are stored in a table in which an expiration counter of data storage is set.
5 . The method of claim 1 , wherein, in step (d), a node having a weight (C nw ) greater than or equal to a weight (C nw ) calculated from the current node is determined as a potential data forwarder of the data packet.
6 . A forwarding system for data broadcast reduction in a Vehicle Named Data Networking (VNDN), the system providing a content data service to a connected vehicle equipped with a Received Signal Strength Indicator (RSSI) and a sensor node and comprising one or more hardware processors configured to:
(a) set name centrality (NameCent) count data with respect to an interest packet received by a node of the VNDN; (b) measure, by the Received Signal Strength Indicator (RSSI), a power level of signal received from an access point (AP) or any other vehicle in wireless communication; (c) calculate a weight of the interest packet for a data forwarder in a current node or a previous node based on the name centrality (NameCent) count data and signal strength measured by the Received Signal Strength Indicator (RSSI), wherein the weight is calculated with logic of the following equation:
W
i
n
=
{
α
×
(
RSSI
F
i
n
RSSI
max
)
+
(
1
-
α
)
×
(
NameCent
F
i
n
NameCent
max
)
}
[
Equation
1
]
(where, W in denotes weight of requested prefix (n) of forwarder (i), RSSI Fin denotes value of received signal strength indicator, RSSI max denotes maximum value of received signal strength indicator, NameCent Fin denotes name centrality count value of requested prefix (n) of forwarder (i), NameCent max denotes maximum name centrality count value of requested prefix (n) of forwarder (i), and a denotes weight factor); and
(d) determine a potential forwarder of a data packet by comparison of variables of the weight calculated in step (c).Cited by (0)
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